While I'm here, a shameless self-promo -- Magnum uses a Python doc generator that includes type annotations by default, moving it closer to what you're used to from C++: https://blog.magnum.graphics/announcements/introducing-pytho...

(Sure, it still means the library has to make those annotations in the first place, and have them correct, but the newer and more complex libraries fortunately do, if even just to make IDE autocompletion work.)